CSHARP

.net return context.Result without extra new objectResult

//handles only exceptions caused by dividing by zero
public class DivideByZeroExceptionFilterAttribute : Attribute, IExceptionFilter
{
    public void OnException(ExceptionContext context)
    {
        //chech if this is divide by zero exception
        if (!(context.Exception is DivideByZeroException))
            return;

        var myerror = new
        {
            result = false,
            message = "Division by zero went wrong"
        };
        context.Result = new ObjectResult(myerror)
        {
            StatusCode = 500
        };

        //set "handled" to true since exception is already property handled
        //and there is no need to run other filters
        context.ExceptionHandled = true;
    }
}

.net return context.Result without extra new objectResult

public class ErrorModel
{
    public string Error { get; set; }

    public int Id { get; set; }

    public List<int> Values { get; set; }
}

//filter

var error = new ErrorModel
{
    Error = context.Exception.Message,
    Id = 1,
    Values = new List<int> { 1, 2, 3 }
};
context.Result = new ObjectResult(error)
{
    StatusCode = 500
};